Some times I walk in on my fish sleeping first I make sure his gills are moving but if I can’t see cause he’s too far away I gently rap the glass. If he is so asleep I might nudge him a tiny bit. I don’t have any experience with puffers but I think those are some signs to look for
Yes! That original post was at like 11:30 pm for me last night. I was finally like "ok at this point there's nothing I can do" just woke up and everyone is swimming around like "uhh where's the food, lady?"